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| author | Benjamin Peterson <benjamin@python.org> | 2014-10-15 11:47:36 -0400 |
|---|---|---|
| committer | Benjamin Peterson <benjamin@python.org> | 2014-10-15 11:47:36 -0400 |
| commit | 89c362b60dffb4c5d1a1bdd6fc22097d1d92e3a5 (patch) | |
| tree | 60ca25c40f3af1f35a379d77b4ea10898759970f /Objects | |
| parent | 385b5f2a01b61226c9d8d416459684a6537d563f (diff) | |
| download | cpython-89c362b60dffb4c5d1a1bdd6fc22097d1d92e3a5.tar.gz | |
fix integer overflow in unicode case operations (closes #22643)
Diffstat (limited to 'Objects')
| -rw-r--r-- | Objects/unicodeobject.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/Objects/unicodeobject.c b/Objects/unicodeobject.c index 1ce5caafdc..35da457530 100644 --- a/Objects/unicodeobject.c +++ b/Objects/unicodeobject.c @@ -9484,6 +9484,11 @@ case_operation(PyObject *self, kind = PyUnicode_KIND(self); data = PyUnicode_DATA(self); length = PyUnicode_GET_LENGTH(self); + if (length > PY_SSIZE_T_MAX / 3 || + length > PY_SIZE_MAX / (3 * sizeof(Py_UCS4))) { + PyErr_SetString(PyExc_OverflowError, "string is too long"); + return NULL; + } tmp = PyMem_MALLOC(sizeof(Py_UCS4) * 3 * length); if (tmp == NULL) return PyErr_NoMemory(); |